is there a place where i can find some accomodation and help people at the same time?

I am moving to renton in some days, i like to help others is there a place where i can stay for some time and for free where others help others?
the thing is i don't have a lot of money.I'D APPRECIATE CAN SEND ME SOME EMAIL ADDRESSES OR ADDERRES IN RENTON TO CINTACT THE RIGHT PERSON.
Thanks.